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I have looked it up and its fuel trim issue bank 1, I've been doing alot of searches and it seems most people get P0173 and also P0170 which is for bank 2! and their problems seem to be anything from vacuum leaks to MAF or intake gasket leaks.

So my question is since I only have P0173 does that narrow it down at all? Is my most likely culprit a leaking intake manifold gasket on bank 1?